Knee brace



FIG. 1 is a perspective view of a knee brace in its closed form as itwould be worn showing our new design;

FIG. 2 is a front elevational view thereof in its open condition;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a top plan view thereof, and

FIG. 5 is an elevational end view thereof.

The ornamental design for a knee brace, substantially as shown anddescribed.